int
BasicGFunEvaluator::setTclRandomVariables(const Vector &x)
{
char theIndex[80];
double xval;
RandomVariable *theRV;
// Set values of random variables in the Tcl intepreter
int nrv = theReliabilityDomain->getNumberOfRandomVariables();
int lsf = theReliabilityDomain->getTagOfActiveLimitStateFunction();
for (int i = 0; i < nrv; i++) {
theRV = theReliabilityDomain->getRandomVariablePtrFromIndex(i);
int rvTag = theRV->getTag();
xval = x(i);
// put in x(1) format
sprintf(theIndex,"%d",rvTag);
if (Tcl_SetVar2Ex(theTclInterp,"xrv",theIndex,Tcl_NewDoubleObj(xval),TCL_LEAVE_ERR_MSG) == NULL) {
opserr << "ERROR GFunEvaluator -- error in setTclRandomVariables xrv" << endln;
opserr << theTclInterp->result << endln;
return -1;
}
// put in x(1,lsfTag) format (useful for reporting design point)
sprintf(theIndex,"%d,%d",rvTag,lsf);
if (Tcl_SetVar2Ex(theTclInterp,"xrv",theIndex,Tcl_NewDoubleObj(xval),TCL_LEAVE_ERR_MSG) == NULL) {
opserr << "ERROR GFunEvaluator -- error in setTclRandomVariables xrv" << endln;
opserr << theTclInterp->result << endln;
return -1;
}
// for legacy reasons, also put random variables in x_1 format
sprintf(theIndex,"x_%d",rvTag);
if (Tcl_SetVar2Ex(theTclInterp,theIndex,NULL,Tcl_NewDoubleObj(xval),TCL_LEAVE_ERR_MSG) == NULL) {
opserr << "ERROR GFunEvaluator -- error in setTclRandomVariables x" << endln;
opserr << theTclInterp->result << endln;
return -1;
}
}
return 0;
}
int
FirstPrincipalCurvature::computeCurvatures()
{
// "Download" limit-state function from reliability domain
int lsfTag = theReliabilityDomain->getTagOfActiveLimitStateFunction();
LimitStateFunction *theLimitStateFunction = theReliabilityDomain->getLimitStateFunctionPtr(lsfTag);
int nrv = theReliabilityDomain->getNumberOfRandomVariables();
// Get hold of first principal curvature from functionEvaluator
curvatures(0) = theFunctionEvaluator->getResponseVariable("curvatureFORM", lsfTag);
// get alpha (can get from FORMAnalysis directly in the future)
Vector alpha(nrv);
for (int j = 0; j < nrv; j++) {
RandomVariable *theRV = theReliabilityDomain->getRandomVariablePtrFromIndex(j);
int rvTag = theRV->getTag();
alpha(j) = theFunctionEvaluator->getResponseVariable("alphaFORM", lsfTag, rvTag);
}
return 0;
}
